CVE-2026-86249
- Source
- https://cve.org/CVERecord?id=CVE-2026-86249
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86249.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-86249
- Published
- 2026-10-21T12:17:42Z
- Modified
- 2026-11-01T02:30:33Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- Apache bRPC: Authentication bypass when a server sets ServerOptions.internal_port and ServerOptions.auth
- Details
-
On a brpc::Server that sets both ServerOptions.auth and ServerOptions.internal_port, the HTTP built-in service exemption on internal_port can be abused to bypass authentication entirely. VerifyHttpRequest() returns true without checking any credential when a built-in service is requested on internal_port, and this verdict is not per - request: verification runs only for the first message of a connection and the result latches the connection. Sending a request such as GET /status to internal_port first authenticates the whole connection, after which every subsequent request dispatched on the same connection is handled without ever calling VerifyHttpRequest(). This lets a remote attacker reach ordinary (non-built-in, non-tabbed) authenticated services without supplying valid credentials whenever the server uses ServerOptions.internal_port together with an Authenticator. The fix restricts internal_port so that it carries only built-in and Tabbed services; requests for ordinary services sent to internal_port are rejected with EPREM / HTTP 403.
Mitigation / Fix: upgrade to 1.18.0 or apply PR https://github.com/apache/brpc/pull/3525 .
Users who rely on serving normal services on internal_port must move those requests to the port passed to Server::Start().
- Database specific
{ "cna_assigner": "apache", "cwe_ids": [ "CWE-287" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86249.json" }- References
Affected packages
Git / github.com/apache/brpc
Affected ranges
- Type
- GIT
- Repo
- https://github.com/apache/brpc
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "1.18.0" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" } ] }